Furnace and steam-boiler fire-box system



Jan. 15, 1929.

P. SALAVERR! TELLECHEA FURNACE AND STEAM BOILER FIREBOX SYSTEM FiledMarch 14, 1927 2 Sheets-Sheet HTTOE/VE/S Jan. 15, 1929.

P. SALAVERRI TELLECHEA FURNACE AND STEAM BOILER FIREBOX SYSTEM FiledMarch 14, 1927 2 Sheets-Sheet 2 Patented Jan. 15, 1929.

STA-'ras PATENT OFFICE.

PEDRO 'SALAVERRI TELLECHEa, oF SANASAABASTI'AN, SPAIN.

FURNAcEAND STEAMBO'ILER Finn-B0X SYSTEM-.

Appucationalea March 1449227, serial- No. 175,061, and Vnospam February15, v1927'.

. The present invention referstofurnace and steam-boiler fire-boxsystems fand especially refers to a .piocess' fo'r.doing away with thegrating of such {ire-box, which, upto present,

5 hasbeen-lookedupon as being 'an indispensable element inr theproduction ofthe draught necesasry-.to-:effect a perfect burning of thefuel..

Apart from effecting an advantage of a saving nature, which, in itselfis of sufficient importance, and of realizing a technical advance inindustry, the invention affords the outstanding advantage 'of being ableto make use of any kind of fuel together with the suppression of smoke.In accordance with the present process, both coal and residues thereofas well as sawdust, furze or any other low cost fuel may be used',all'of which will obtain the maximum caloric yield up to its beingentirely consumed.

The attached drawings show, by way of example, a form of carrying theinvention into effect and in them z- Fig. 1 shows the section of afurnace drawn up in accordance with the invention,

Fig. 2 shows a plan detail of the same.

Fig. 3 shows Y a front vie-w of a furnace made as per the invention; and

Fig. 4 Shows a detail of one of the plates 5"" and its operating lever.

As will be seen from the drawings, a (irebox made in accordance with theinvention is composed of the following elements:

lt being supposed (sce Fig. 1) that the necessary heating has to besupplied to a boiler or furnace l, the latter will be built with the.front wall of fireproof or other suitable material On this wall ismounted a sliding door 4 operated at 3 by any known means allowing ofits being gradually raised or lowered to given distances and leavingr anopening 4 for the purposes to be stated later.

The fire-box grating is formed by a flooring entirely composed of plates7 laid in echelon one overlapping the other and which, under normalconditions, furnish a flooring competely joined and sealed on which thecoai thrown in through hopper 5 will rest, the hopper being providedwith a sliding door 6 or something similar thereto.

These plates 7 are susceptible of being operated in the direction shownby the dotted line of Fig. 1 by means of levers 8 which raise same andallow them to pivot on aide 12 which maintains the plates fixed at onepoint, and the pivot 11 allowing of the. articulationfof said 'lever onthefplate. Each lever 8 has 2.,.

notches 14 made thereinI which allow of its being hookedr into a lfixedpOSitionfont'rods or projectingpoints 13 provided .in [the "innerwalls'ofthe'Iire-box.' i

The working is as follows F uel is thrown into hopper 5 and, by reasonof the slopinor position of said hopper, it is distributed alDong thesurface of the plates. Once the coal is inside, the hopper is closed bysliding door 6^, the fuel then being set on fire at the most convenientpoint. As will be easily understood from this, the sliding door 4 of thefire-box serves to regulate the thickness of the fuel layer and as aninlet for same through space 4.

Once the fuel is set on lire, any one of the vplates is raised (in caseof a strong combustion being required, several could be lifted) and forthis reason the following effect will be produced lhere will be starteda draught directly to the chimney of the fire-box coming through thespace made by the plate being raised and said draught will follow thedirection shown by arrows in F ig. 1. The force of this draught willhave the san'ieefect as a blowpipe on the burning fuel, the flame ofthis socalled blowppe being applied directly on the wall of the boileradjacent to thel lire-box.

A. successive working of the plates will perinil. the regulation of theintensity of the combustion and the progressive or simultaneous burningof the whole fuel layer, thereby realizing a perfect graduation of theintensity of the fire, and an absolute regulation of the fuel beingburned.

On the other hand, the direct action of the air, permits the utilizationof any kind of fuel without fear of obstruction or of defects in thefuel due to the constant activity of the draught given to the combustionprocess.

It will be understood from what has been stated, that the invention willstill continue bsist even in the vcase of different means C: applicationbeing adopted necessary to the exigencies of the cases that m.y appear1n practice, such as the application of the invention toindustrialtire-boxes, furnaces, moylng or stationary steam-boilers, heatingbOlleFS etc. Also the elements employed to carry the` invention intoeffe'ct could be made of any kind of material Aadequate for the purposein.

each case.

I claim:

1. A furnace comprising a fuel-receiving hopper, a plurality of normallyinclined' plates adjacent the outlet of said hopper and combining toormthe ,grateo the furnace, means for regulating the passage of fuelfrom said hoppertosaid' grate, andmeanslor separately varying theinclination of each of said plates. Y' I' l 2. A furnace comprising a.fuel-receiving hopper, a 'plurality of lates adjacent t-he outletef'saidhopper, sai 'plates being normally inclined away from said' outlet andcombining t-o form. the' grate of the furnace, operating levers attachedto said plates for separately var ing their inclination, and means forselectively supporting each of said operating levers in a pluralityofpositions.

3. A furnace comprising a fuel-receiving hopper, a plurality of normallyinclined and pivotaljly supported plates constituting the grate properof the furnace, a notched lever pi-veted-.toieach pl'atefor individuallyvarying its inclination, a. rod engaging in the notches ofeacl'i levert@supportC the'associated plate in any adjusted position, and a slidingdoor disposed' between said lhopper and grate and movable toward and'awayv from saidA grate to regulate the passage of fuel from the hopperto the grate.

In testimony whereof I havev aflixed my signature.

PEDRO SALAVERRI TELLECHEA.

